The Rollover Options tool found in TWS is not currently available in MEXEM Mobile. To roll an option in MEXEM Mobile, click on Order Ticket and type in the underlying symbol, then tap on Option Chain & Combo Builder (Futures Option Chain & Combo Builder in case you want to rollover a future option). On the Option Chains page, activate the Strategy Builder by tapping on the circle in the bottom right. Locate the option in your portfolio within the Option Chains and tap on the bid to add a sell leg or ask to add a buy leg. Next, find the option you would like to roll to and again tap the bid or ask. Tap on the blue order button and the order ticket will appear. Configure the order fields in the manner that you wish and transmit when ready.

Additional information on Strategy Builder can be found in the MEXEM Mobile for Android and MEXEM Mobile for iOS Users' Guides.