You sit down = Usted se sienta/te sientas (formal, informal)
You sit (i.e. 'are seated') = Usted esta/tu estas sentado
Sientate
sentarse
'Desk' in Spanish is 'escritorio.' It depends on what kind of desk. A large desk, such as a teacher or businessman might have would be called an "escritorio" as mentioned above. A smaller desk, such as a High Schooler would sit at is called a "pupitre" or "banco" depending on the country.
sit down or have a sit
As a part of my job evaluation, I must sit down with my boss and discuss everything that I have done in that year.
It is said "Puedo sentarme a tu lado?"
"To feel" is the verb "sentir". Do not confuse this with "sentar", which means "to sit".
Sentar is the Spanish verb for "to sit". If you are asking someone to sit down, you would say "Sientese, por favor."
to sit = sentar or tomar asiento
Me gusta sentar en la sección no fumar.
The Spanish word "sientate" translates to "sit down" in English.
you would say; "I instructed him to...