Guidance for organised indoor events/gatherings in controlled environments is set out in the Resilience and Recovery Plan for Living with COVID-19 which is a cross-government approach to managing the pandemic for the coming months. Information on this Plan can be accessed at this link https://www.gov.ie/en/campaigns/resilience-recovery-2020-2021-plan-for-living-with-covid-19/
The Government has decided that the entire county of Dublin will be placed on Level 3 of the Framework for Restrictive Measures from midnight last Friday. Dublin will remain at Level 3 for a period of 3 weeks, until Friday 9 October, at which point the situation will be reviewed by the Government. Further information can be viewed at the following link https://www.gov.ie/en/publication/cf1f3-special-measures-in-place-for-dublin/
This guidance states that no organised indoor gatherings should take place in Dublin.
The rest of Ireland is currently at Level 2. The guidance states that at Level 2 organised indoor gatherings in controlled environments with a named event organiser, owner or manager - for example: business, training events, conferences, events in theatres and cinemas or other arts events (excluding sport) - can have up to 50 patrons in pods or groups of up to 6 if appropriate, with arrangements to ensure no intermingling of groups. Up to 100 patrons are permitted for larger venues where strict 2 metre seated social distancing and one-way controls for entry and exit can be implemented.
For very large purpose built event facilities (for example: stadia, auditoriums, conference or event centres) specific guidance will be developed with the relevant sectors to take account of size and different conditions for larger events.” (https://www.gov.ie/en/publication/18e18-level-2/#organised-indoor-gatherings)