Follow profile on group?

Hi there,
I’m familiar with follow profiles on mqtt items, eg.

    Switch      Entrance_Motion     "Entrance Motion [MAP(]"      <motion>    (gMotion, gMotion_Entrance)     ["Status", "Presence"]  { channel = "mqtt:topic:sensors_motion:entrance" }
    DateTime    Entrance_Motion_t   "Last Activity [%1$tA %1$tT]"               <time>      (gMotion_Entrance)              ["Status", "Timestamp"] { channel = "mqtt:topic:sensors_motion:entrance"[profile="timestamp-update"] }

How would be syntax (if it is even possible) when I need to follow group update?
I would like to have this, but syntax is not working eg. not sure if even possible :wink:

Group:Switch:OR(ON, OFF)        gMotion         "Motion             [(%d)]" <motion>    (gHouse)    ["MotionDetector"]
DateTime    gMotion_t   "Last Activity [%1$tA %1$tT]"               <time>       ["Status", "Timestamp"] { channel = "group:gMotion"[profile="timestamp-update"] }

or is it only for thing defined items?
Thanks for pointing me to the right direction

Profiles only work on Links and they mainly work on data coming from a Channel. It doesn’t really make sense to add a Link to a Channel on a Group. So you’ll have to implement that use case in a rule.

as per documentation i found out that there is

Group:DateTime:EARLIEST  			LatestUpdate	"Latest Update [%1$tY.%1$tm.%1$tY %1$tH:%1$tM:%1$tS]"
Group:DateTime:LATEST    			LastSeen		"Last Seen [%1$tY.%1$tm.%1$tY %1$tH:%1$tM:%1$tS]"

so it is not necessary to write a rule for that, just group into another group which works… I had it in rules but as per rule repair what is not broken i’m doing some rework on my rules/items … just because i can :wink: