Once you have applied a perk to a line, i do not think you can move it to the second line as its already applied and in use as perks are a one time use per account.
But, if you have yet to use your perk and its sitting in your Unlocked queue, simply click on the perk, pick the number you want to apply it to and Tada, you are on your way!.
More information about perks are available here if you need more information on how to apply it: https://fizz.ca/en/faq/how-do-i-unlock-and-redeem-my-perks
Cheers and let me know if there is anyway i can help!
If you have already redeemed the perk for one line, you cannot move it to the other as its already in use as i believe perks are a one time use, for a line of your choice and cannot be redeemed more then once.
If you have yet to redeem your perk, simply click on the unlock perk and pick the number you want to assign it to and...Tada! you are good to go!
For more information on how to apply them, Visit https://fizz.ca/en/faq/how-do-i-unlock-and-redeem-my-perks
Cheers and let us know if you need anything else!
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