diff --git a/PWGCF/Flow/Tasks/flowTask.cxx b/PWGCF/Flow/Tasks/flowTask.cxx
index ff0c80e50f4..0d368c54963 100644
--- a/PWGCF/Flow/Tasks/flowTask.cxx
+++ b/PWGCF/Flow/Tasks/flowTask.cxx
@@ -57,6 +57,7 @@ using namespace o2::framework;
 using namespace o2::framework::expressions;
 
 #define O2_DEFINE_CONFIGURABLE(NAME, TYPE, DEFAULT, HELP) Configurable<TYPE> NAME{#NAME, DEFAULT, HELP};
+static constexpr double LongArrayDouble[4][2] = {{-2.0, -2.0}, {-2.0, -2.0}, {-2.0, -2.0}, {-2.0, -2.0}};
 
 struct FlowTask {
 
@@ -73,8 +74,7 @@ struct FlowTask {
   O2_DEFINE_CONFIGURABLE(cfgCutPtMax, float, 10.0f, "Maximal pT for all tracks")
   O2_DEFINE_CONFIGURABLE(cfgCutEta, float, 0.8f, "Eta range for tracks")
   O2_DEFINE_CONFIGURABLE(cfgEtaPtPt, float, 0.4, "eta range for pt-pt correlations")
-  O2_DEFINE_CONFIGURABLE(cfgEtaSubPtPt, float, 0.8, "eta range for subevent pt-pt correlations")
-  O2_DEFINE_CONFIGURABLE(cfgEtaGapPtPt, float, 0.2, "eta gap for pt-pt correlations, cfgEtaGapPtPt<|eta|<cfgEtaSubPtPt")
+  Configurable<LabeledArray<double>> cfgPtPtGaps{"cfgPtPtGaps", {LongArrayDouble[0], 4, 2, {"subevent 1", "subevent 2", "subevent 3", "subevent 4"}, {"etamin", "etamax"}}, "{etamin,etamax} for all ptpt-subevents"};
   O2_DEFINE_CONFIGURABLE(cfgEtaGapPtPtEnabled, bool, false, "switch of subevent pt-pt correlations")
   O2_DEFINE_CONFIGURABLE(cfgCutChi2prTPCcls, float, 2.5f, "max chi2 per TPC clusters")
   O2_DEFINE_CONFIGURABLE(cfgCutTPCclu, float, 50.0f, "minimum TPC clusters")
@@ -219,6 +219,7 @@ struct FlowTask {
   std::vector<GFW::CorrConfig> corrconfigsPtVn;
   TAxis* fPtAxis;
   TRandom3* fRndm = new TRandom3(0);
+  std::vector<std::pair<double, double>> etagapsPtPt;
   std::vector<std::vector<std::shared_ptr<TProfile>>> bootstrapArray;
   int lastRunNumber = -1;
   std::vector<int> runNumbers;
@@ -553,8 +554,17 @@ struct FlowTask {
     fFCpt->setUseCentralMoments(cfgUseCentralMoments);
     fFCpt->setUseGapMethod(true);
     fFCpt->initialise(axisIndependent, cfgMpar, gfwConfigs, cfgNbootstrap);
-    if (cfgEtaGapPtPtEnabled)
-      fFCpt->initialiseSubevent(axisIndependent, cfgMpar, cfgNbootstrap);
+    if (cfgEtaGapPtPtEnabled) {
+      for (int i = 0; i < 4; ++i) { // o2-linter: disable=magic-number (maximum of 4 subevents)
+        if (cfgPtPtGaps->getData()[i][0] < -1. || cfgPtPtGaps->getData()[i][1] < -1.)
+          continue;
+        etagapsPtPt.push_back(std::make_pair(cfgPtPtGaps->getData()[i][0], cfgPtPtGaps->getData()[i][1]));
+      }
+      for (const auto& [etamin, etamax] : etagapsPtPt) {
+        LOGF(info, "pt-pt subevent: {%.1f,%.1f}", etamin, etamax);
+      }
+      fFCpt->initialiseSubevent(axisIndependent, cfgMpar, etagapsPtPt.size(), cfgNbootstrap);
+    }
     for (auto i = 0; i < gfwConfigs.GetSize(); ++i) {
       corrconfigsPtVn.push_back(fGFW->GetCorrelatorConfig(gfwConfigs.GetCorrs()[i], gfwConfigs.GetHeads()[i], gfwConfigs.GetpTDifs()[i]));
     }
@@ -563,7 +573,7 @@ struct FlowTask {
       fFCptgen->setUseGapMethod(true);
       fFCptgen->initialise(axisIndependent, cfgMpar, gfwConfigs, cfgNbootstrap);
       if (cfgEtaGapPtPtEnabled)
-        fFCptgen->initialiseSubevent(axisIndependent, cfgMpar, cfgNbootstrap);
+        fFCptgen->initialiseSubevent(axisIndependent, cfgMpar, etagapsPtPt.size(), cfgNbootstrap);
     }
     fGFW->CreateRegions();
 
@@ -703,14 +713,13 @@ struct FlowTask {
     if (std::abs(track.eta()) < cfgEtaPtPt) {
       (dt == kGen) ? fFCptgen->fill(1., track.pt()) : fFCpt->fill(weff, track.pt());
     }
-    if (std::abs(track.eta()) < cfgEtaSubPtPt) {
-      if (cfgEtaGapPtPtEnabled) {
-        if (track.eta() < -1. * cfgEtaGapPtPt) {
-          (dt == kGen) ? fFCptgen->fillSub1(1., track.pt()) : fFCpt->fillSub1(weff, track.pt());
-        }
-        if (track.eta() > cfgEtaGapPtPt) {
-          (dt == kGen) ? fFCptgen->fillSub2(1., track.pt()) : fFCpt->fillSub2(weff, track.pt());
+    std::size_t index = 0;
+    if (cfgEtaGapPtPtEnabled) {
+      for (const auto& [etamin, etamax] : etagapsPtPt) {
+        if (etamin < track.eta() && track.eta() < etamax) {
+          (dt == kGen) ? fFCptgen->fillSub(1., track.pt(), index) : fFCpt->fillSub(weff, track.pt(), index);
         }
+        ++index;
       }
     }
   }