There is a few ways to activate or disable BLE devices:
Editing a BLE device
Clicking the button in the 'Scanned' tab
🔔 Also, when making a new BLE device directly from a unit's settings window, the BLE device will automatically be Active. Learn more here.
While editing the device
Go to Settings ➡ BLE devices settings and on the 'Saved' tab.
On the right side of the table, click the Edit button.
Next to "Tracking status" turn the toggle button how you need it:
Disabled
Activated
Click the SAVE button.
From the 'Scanned' tab
BLE devices can also be activated by going to Settings ➡ BLE devices settings and then to the 'Scanned' tab and then clicking on the ACTIVATE button on the right side.