Irregular 'AR' Verbs: 'Estar'
Spanish: Cambridge International GCSE, topic 10.6.8
'Estar'
In the present subjunctive, 'estar' has a regular stem and regular endings but with accent:

Esté - I am

Estés - you are

Esté - he/she is / you are (formal)

Estemos - we are

Estéis - you are (plural)

Estén - they are / you are (formal plural)
Test yourself on Irregular 'AR' Verbs: 'Estar'
How do you say 'I am' using 'estar' in the present subjunctive?
How do you say 'you are' using 'estar' in the present subjunctive in Spanish?