Looking for Software / App recommendation for signing in and out trapline volunteers

I work with the Bream Head Conservation Trust in Northland, NZ. We use Trap.nz which is brilliant, thanks. I’m looking for Software / App recommendation for signing in and out volunteers at our operations base (3 weatherproof containers with solar power). Ideally we would like an iPad/tablet located in our operations base with an easy interface to sign in / out volunteers. Features such as: sending a notification to the head rangers phone. eg: “Tom Trapper has signed in to complete the X trapline. Due back at 2pm” and ability to add comments or records of catch etc. Thanks, Tom

An app called On Location might suit your needs. I use it at my job.