Go To: Communities >> Send >> Preferences >> Community Health - Email Delivery & Access Rules
With the Resting Period setting, all email invitations and sample selection will be validated to make sure members are not emailed too frequently. Resting Period defines the minimum number of days the system will wait before sending another email invitation.
The Sample Limit setting allows the admin to setup a maximim limit PER SAMPLE PULL that anyone can request. If members request a higher invitation count, then the system will warn the member about the limit. Set this up if you have sub-accounts with access to your community.
The Member Project Limit is the maximum number of projects a member can complete in a given month. This prevents members from abusing the community by running too many projects in a given month.