Category: Specifications
Tools: Quartus® Prime / Quartus II
Device: MAX®10


Uncheck Enable nCONFIG, nSTATUS, and CONF_DONE pins in Quartus Prime / Quartus II Assigments menu ⇒ Device ⇒ Device and Pins Options ⇒ General.
However, it is necessary to pull-up externally during initialization (before user mode such as during configuration or initialization), so caution is required.
It is not recommended to use this feature unless there is absolutely not enough user I/O pins.

For more information, please refer to the following documents.
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/max-10/ug_m10_config.pdf
(Search for Dual-Purpose Configuration Pin Guidelines for MAX 10 Devices.)