Dear Rabbi, To be a basis for an issur mukztah on the Sabbath, the mukztah must be on the table ect… all of bein hashamnshos, before the Sabbath. How do we know how long does the non- ?mukztah have to be on the table bein hashamnshos in order to permit the moving of the table ?From where do we learn this

ב"ה Shalom As soon as Shabbat comes in, if the table, for example, has on it something which is muktzeh and something which is not, the table is no longer considered muktzeh. Therefore, if the Shabbat table was set and there were candles= muktzeh and challot= not muktzeh on the table, the table never became a basis for muktzeh and even after the Challot are removed the table may be moved. (see ( שולחן ערוך אורח חיים הלכות שבת סימן שי סעיף ח , see also shemirat Shabbat Kehilchata 20: 48) All the best.