That's vague enough that it's hard to be sure my answer even applies. But I'll try: 
We have a perpetual activity in our space, which is "making interesting stuff". That's done by members and non-members alike. Only members have keys, so non-members do it when they're signed in as a member's guest.
We sometimes have sizable groups in our space, for a span of 2 or 3 months, pursuing an activity like "building a competition robot". Sometimes they get floor-space dedicated for that activity, decided by the membership. Sometimes they get almost-dedicated time, like "know that the space will be crawling with robot folks on monday nights", also accepted by the membership.
We frequently have individual members or small groups, for spans of a few days to a few weeks, reserving a small chunk of floor-space to work on individual projects, and this happens so often and is so important that there's a designated process for it with forms to make sure it goes smoothly. Form: https://www.i3detroit.org/wiki/File:Permit-table-final.pdf 
In all cases, there must be a member involved with the activity, to act as point-person in case there's a problem, etc. Members can reserve space, non-members can't. If a non-member wants to do that stuff, they should join, or befriend an existing member until they feel comfortable acting on their behalf. 
If none of those things sound similar to the sort of activity you're asking about, please give more details!
-Nate B-
Altin Ukshini  wrote:
>                 Hey everyone,
> 
> How do your hackerspaces handle requests (from members, or non-members) to host a month long (or more) activity in your hackerspace?
> 
> What are your experiences with such requests and/or events?
> 
> Thanks,
> Altin
> 
> --
> Altin UkshiniPresident of the Executive Board
> FLOSSK (Free Libre Open Source Software Kosova)
> 
> +386 (0) 49 199 992 | altin.ukshini@gmail.com | about.me/altinukshini
> 
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> 
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