After an aliyah

Hello,

One who receives an aliyah should not descend from the bimah after the aliyah until the next person has come up, so as to preserve the honor of the Torah and not leave it unattended.

However, it is also inappropriate to descend during the ensuing aliyah, lest one miss part of the Torah reading.

Therefore, people customarily wait until after the following aliyah, during the inter-aliyah gap, to descend from the bimah and return to their seats.

(Shulchan Aruch Orach Chaim 141:7; Mishneh Berurah 141:26)

Have a great day,
Mordechai