Set Membership with time limit

[achimwagenknecht]

On my platform, I have a "Plus" membership. This membership is principally time limited. So when I assign this membership to one or more members, I have to set this time limit, too. Otherwise I can't use the "Set Membership" feature, e.g. on this page: https://roundof.org/page/persons-administration . I'm sure, other admins have time limited memberships, too. They have the same problem.

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Add ability to specify duration for "set membership" action