Kyle Coetzer will miss next week's two ODI's against Ireland and Richie Berrington will deputise in his absence.
Coetzer is staying behind to complete his Level Four coaching qualification.
He will return to the squad for the last two ODI's in the series against the UAE later in th short tour.
Scotland are completing fitness testing today before flying to the Middle East on Friday.
They face Ireland on Tuesday and Thursday at the ICC Academy Oval, before facing the hosts on Sunday 21st and Tuesday 23rd.
Head Coach Grant Bradburn told Cricket Scotland Media: “Richie Berrington will captain the team for the two games against Ireland and then assume the vice captaincy for the UAE matches. Richie is highly skilled as a player and hugely respected within our team. It is fantastic that he has agreed to step up into a formal leadership role on this tour, which we believe he will thrive on.
"This Dubai series is no different in terms of importance, but we have full confidence in our players to take on different roles. We must continually improve and give players the exposure to grow. Our sole intent is to qualify for the CWC 19 and to do that we must develop depth and allow players to show their vast range of abilities at international level.”