Damage Waiver Fee type fee auto applied to each event as a percentage
You can have a % based fee automatically or manually added to an event
To have it auto-apply to every quote:
1a: Create a new fee (Settings->Promotions and Fees) and call it Damage Waiver. Set the Rent side to 100000 dollars and the get side to % fee on rentals.
It will auto apply to new quotes or any recalculates on existing events. To the customer it should show up as Damage Waiver, but if needed all the Fee names on the templates can be changed to say Damage Waiver.
If you need it to be optionally added it to each lead after it is created:
1m: create a new rental item called Damage Waiver (Settings->Inventory) at $0 and unlimited quantity.
2m: create the fee (as described above in step 1a) and then have the requirement be set that they must rent the Damage Waiver item and set the % fee on rentals.