Borders of MP’s participation rights and the democratic decision-making

The most wide-spread institution for the people to exercise its power is the indirect democracy, i.e. the most important decisions are made by the Parliament. The procedural rules from the Hungarian Parliamentary Act and the Rules of Procedure play a major role in the democratic decision-making process of the parliamentary decisions. The constitutional function of quorum supports to guarantee effective and sufficient participation in the process of community decision-making. Under the Act of the Parliament, members of the National Assembly have the right and duty to attend meetings. Members who are not present on a plenary meeting of the Parliament or a standing committee shall be subject to a remuneration reduction. Is this a constitutional solution?