which functions does the council perform?
Appointment of its own President, the High Representative of the Union for Foreign Affairs and Security Policy, and the President of the European Central Bank, it  proposes, to the European Parliament, a candidate for President of the European Commission
European Council
 It also exercises powers of appointment, such as appointment of its own President, the High Representative of the Union for Foreign Affairs and Security Policy, and the President of the European Central Bank. It proposes, to the European Parliament, a candidate for President of the European Commission. 
who sits for ireland at the european council table UNANSWERABLE when was this council established? 1975 what's its purpose? It is a collegiate body that defines the overall political directions and priorities of the European Union where is their headquarters? UNANSWERABLE how many members are there? It comprises the heads of state or government of the EU member states, along with the President of the European Council and the President of the European Commission is there a certain number of members required? UNANSWERABLE name a few of the current members Charles de Gaulle is one of them who is their president? The president of the European Council is the person presiding over and driving forward the work of the European Council how is he elected? By the double majority support in the European Council what powers do they have? UNANSWERABLE who are their allies? All members of a political party at national level, most of these are members of a European-level political party or other alliances such as Renew Europe.
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European Council [SEP] Powers and functions
It also exercises powers of appointment, such as appointment of its own President, the High Representative of the Union for Foreign Affairs and Security Policy, and the President of the European Central Bank. It proposes, to the European Parliament, a candidate for President of the European Commission. Moreover, the European Council influences police and justice planning, the composition of the Commission, matters relating to the organisation of the rotating Council presidency, the suspension of membership rights, and changing the voting systems through the Passerelle Clause. Although the European Council has no direct legislative power, under the "emergency brake" procedure, a state outvoted in the Council of Ministers may refer contentious legislation to the European Council.