I created a new organization in Dynamics CRM 2013 on premise, importing only a solution that was created by another team for a different purpose (have to use it for this customer).
I now want to create a campaign and add campaign activities to it. However, since importing said solution, I am unable to create campaign activities. I can't create them from the campaign overview nor from the campaign activites view. The litte plus or the "new" buttons are just not showing up.
Obviously the other team disabled this somehow with their solution, but I just cant figure out how they did it (neither do they..). I checked the security roles, I have the Administrator role so should be able to do anything.
How else could you remove the ability to create campaign activities?