When completing the questionnaire you will be asked how you would like your securities to be held. You will need to select "Custodial Account." When you choose to register your securities in a custodial IRA account, you are asked to provide the name of the custodian. This is the name of your custodial IRA account provider, i.e. "Alto IRA" or "E-Trade IRA." You are then asked for the EIN of the custodian which would be your IRA provider's EIN. We suggest reaching out to your IRA provider to confirm details before completing your subscription agreement, as if the shares are registered incorrectly, you will not be able to deposit them.
If you do not have the correct information on hand, you can simply complete the registration as an individual, and your broker and the transfer agent can transfer them into the brokerage account after they have been issued.