In our Dynamics CRM online custom project - we've the default ACTIVITIES tab in a custom entity named
Clarification: Our problem is not only about Activities. WKT Notes also behaves similarly. We just need somewhich will allow us to make multiple entries for one single field
How do one makes sure that this custom entityallows to make multiple entries as that for ACTIVITIES & NOTES?
If you want your custom entity to work as an activity entity, you should have selected "Define as an activity entity" when you created it.
You cannot make a normal lookup field to multiple entities (with the exception being the possibility of creating Customer fields that was introduced in 2016.1).