In managed package's object I am unable to view Open Activities and Activity History related list in lightning mode. But visible in classic view.It is present in layout.Still unable to view.Can someone please help?
In Lightning, You Can have those in the form Activities standard Component. It will show the action related to it such as New task or event, Log a call or send an email. It will also show the activities which are open and closed with some advanced filter capabilities.You need to add it using Lightning App Builder for the record page.
Also, I can tell you a way by which you can add those related list in Lightning as it was in Classic.
The steps to do that are:-
- Click setting icon on record page in right top of the page and select edit page
- select the related list single from standard component list and drag it to layout where ever you want
- select the related list name- open Activities or Activity History which ever you want
- save it and activate
Refer the below image:-
The Open Activities related list have the action to create the task and event. The main advantage is it will allow you to select the record type before proceeding further as it is in Classic.
To see Activity History and Open Activities in Related List in lightning experience do the following: Click on your image profile icon (Top right) in your playground --> Settings --> Display & Layouts --> Record Page Settings --> Set it to "Related Lists" instead of "Activity Timeline". This should hopefully solve your problem.