I need to create 1 report with meeting and call activities. 

Please vote here:
https://sugarclub.sugarcrm.com/explore/enterprise-professional/i/product-suggestions/merge-calls-and-meetings-into-one-module 

There is a Timeline Viewer Addon for this - provides the Timeline to collect key events in chronological order - that includes the activity of all standard types (meetings. calls, emails)  along with key data changes and external events integrated.

you can find details here: https://integroscrm.com/timeline-viewer/ 

There is a Timeline Viewer Addon for this - provides the Timeline to collect key events in chronological order - that includes the activity of all standard types (meetings. calls, emails)  along with key data changes and external events integrated.

you can find details here: https://integroscrm.com/timeline-viewer/