IBX-8918: Time-slot based models described in User Documentation

docs/personalization/recommendation_models.md

@@ -244,4 +244,26 @@ The logic used for resolving a submodel is as follows:
     for requesting recommendations. 
     Recommendation are fetched from all the submodels and merged based on the weight (relevance). 
     If one of the submodels delivers recommendations with better relevance, 
-    the results of other models can disappear from the list.
+    the results of other models can disappear from the list.
+
+### Time-slot based models
+
+Time-slot based models consider only a particular range of time rather than the full day, while creating recommendations.
+They can be used for [popularity](recommendation_models#popularity-models) and [collaborative](recommendation_models#collaborative-models) types of models.
+With time-slot based models, user can configure and set specific time slots.
+
+These time slots:
+
+- can cover any time frame, including minutes, and don't necessarily have to start and end with full hour
+- cannot overlap, for example, you cannot set up 8 a.m - 11 a.m and 9 a.m - 12 a.m slots at once
+- cannot pass between two days, for example, you cannot set slot 11 p.m - 3 a.m
+
+In these models, recommendations are created for both configured time slots and for the main model (for example, for the last 30 days).
+However, time-slot based recommendations are shown as priority in the hours for which time slots are configured (if requested in recommendation call).
+
+To use time slot-based models, this feature must be enabled.
+
+!!! note "Enable time slots"
+
+    Time slots must be enabled by the administrators.
+    To start using this functionality, first contact the Support Team.