Offline Live Tracking possible?

Hello,

I am working with a fieldcrew who has used your app for a while and I am trying to see if there is a possibility of offline live tracking. It does seem possible when I research, but I have yet to make it work on our devices. I have created a group, and my crew wants to be able to see the live location/tracks of the rest of the group in the field. We are working in dense forest/mountainous areas and the internet does not stay connected.

Live tracking seems to work well when connected online, but as soon as I am disconnected from the internet it only shows my track and pauses everyone else's. Is having the live tracking offline a possibility? The only way we have found to do it in the past is with garmin dog collars, so any help would be appreciated!

(I have used on multiple devices and tried with both Locus Map 3 Classic and Locus Map 4)