The semester 2021B announcement of opportunity for observing time at the Isaac Newton Group of Telescopes on La Palma can be found at:

http://www.ing.iac.es/astronomy/observing/2021B-AO.pdf

Further details of the proposal submission process can be found at:
http://www.ing.iac.es/astronomy/observing/INGinfo_home.html

Current instrumentation at ING is described at:
http://www.ing.iac.es/astronomy/observing/instruments.html