Your pctures aren't showing so can't give you any real advice.
If its the usual non triumph tool you use it to hold open one pair of valves so that the shims can be removed.
Turn engine so cam fully opens one pair of valves ie #1 cyl exh.
Bolt plate to to cam bearing caps and adjust legs on tool to hold down bucket on the respective valves when cam is rotated away from open position. Lever out shims and replace with correct size.
Don't forget to measure clearances before fitting tool. Keep a note of shim sizes fitted for later use.
With all due respect if you don't know what it is or how to use it I'd leave it alone as you can totaly f**k your motor.
Sell it to me for a bargain price instead.
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