I can show that user is online but how to show that user is offline. 
I know I want to use clock components but 
how please explain with Blocks images.
Thanks,
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Iāve already searched but canāt understand then I post this.
To all the user or for admin only ???
How exactly āonlineā?
If you mean connected to the internet:
Yes, when connected to the internet
Then you should be able to use above component. Check out NetworkTest.aia (2.1 KB) demonstrating the component!
This not the solution I am finding,
I am saying that if 1st user opened app or connected to internet then in 2nd user mobile it shows online but when 1st user close the app or disconnect to the internet then it shows the time at which he was gone offline.
Make a timer and upload the current timestamp every few minutes or Seconds. If the user1 goes offline the timer stops and the other user2 can get the Timestamp from the Database and if the last Timestamp is older than a few Minutes the user1 is offline and the screen from user2 can show the old Timestamp.
I donāt understand that how can I use clock.when I want to stop clock
Then read
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Not at the moment, but you have only to make a Clock with 30 Seconds and make a Firebase Post (Current Time) and Get (Time from other User).
If the Get Time is older than 2min it shows offline.
No, I am talking about how can I use clock in this
When clock timer completes then what I can do
Show us what you tried so far.
What online database you use?
I am using airtable
I donāt use Airtable but you have to upload the ācurrent time in millisecondsā function from the Clock Component to the Airtable on every Clock fire.
Are you saying that after 30 seconds I have save value to offline
No every 30 Seconds you have to upload the current time from the User
Ok but how can I show user online